best effort export of ooo72950-1.odt to docx without crashing

the curious case of ooo72950-1.odt which has no nodes in the first line of the
table as seen from the visual layout perspective seeing as the table is split
over two columns with the second column portion of the table higher than the
left column portion

Change-Id: I38526bf80ff8cef1688aa5f5f686e437c4a3d6e5
(cherry picked from commit f81c775b)

sw/qa/extras/ooxmlexport/ooxmlexport5.cxx

@@ -843,6 +843,12 @@ DECLARE_OOXMLEXPORT_TEST(testKDE216114, "kde216114-1.odt")
         assertXPath(pXmlDoc, "//w:pict", 1);
 }
 
+DECLARE_OOXMLEXPORT_TEST(testOO72950, "ooo72950-1.odt")
+{
+    if (xmlDocPtr pXmlDoc = parseExport("word/document.xml"))
+        assertXPath(pXmlDoc, "//w:tbl", 1);
+}
+
 CPPUNIT_PLUGIN_IMPLEMENT();
 
 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */

sw/source/filter/ww8/docxattributeoutput.cxx

@@ -250,7 +250,7 @@ void DocxAttributeOutput::StartParagraph( ww8::WW8TableNodeInfo::Pointer_t pText
 
         sal_uInt32 nRow = pTextNodeInfo->getRow();
         sal_uInt32 nCell = pTextNodeInfo->getCell();
-        if ( nRow == 0 && nCell == 0 )
+        if (nCell == 0)
         {
             // Do we have to start the table?
             // [If we are at the right depth already, it means that we
@@ -260,14 +260,14 @@ void DocxAttributeOutput::StartParagraph( ww8::WW8TableNodeInfo::Pointer_t pText
             if ( nCurrentDepth > m_tableReference->m_nTableDepth )
             {
                 // Start all the tables that begin here
-                for ( sal_uInt32 nDepth = m_tableReference->m_nTableDepth + 1; nDepth <= pTextNodeInfo->getDepth(); ++nDepth )
+                for ( sal_uInt32 nDepth = m_tableReference->m_nTableDepth + 1; nDepth <= nCurrentDepth; ++nDepth )
                 {
                     ww8::WW8TableNodeInfoInner::Pointer_t pInner( pTextNodeInfo->getInnerForDepth( nDepth ) );
 
                     StartTable( pInner );
                     StartTableRow( pInner );
 
-                    StartTableCell(pInner, 0, 0);
+                    StartTableCell(pInner, 0, nDepth == nCurrentDepth ? nRow : 0);
                 }
 
                 m_tableReference->m_nTableDepth = nCurrentDepth;